Web Links

Chapter 6, Correlation and Dating of the Rock Record

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Boggy's links to stratigraphy and geochronology. Many links to sites with general stratigraphy information and sites on the stratigraphy of various geological time intervals.

Rocks and Layers. USGS publication on the fundamentals of stratigraphy.

Relative Dating. Short, colorfully illustrated overview of relative dating.

Dating Techniques. Short overview of relative and radiometric dating.

USGS publication on the relative time scale.

USGS publication on Fossil Succession.

Origin of Some of the Names in the Geologic Time Scale.

Another site on the origin of geological system names.

Correlation. A brief definition of correlation, with diagrams.

Index Fossils. USGS publication. A chart of index fossils for various intervals of the geologic time scale.

Overview of magnetic stratigraphy.

Stratigraphy and Geologic Age. A good overview, including discussions of relative age, absolute age, and unconformities. Guides the viewer through a procedure to determine the relative age of a series of strata, using an illustrated example.

The Geology of the Grand Canyon. An excellent site with many photos and detailed information about the geology of the Grand Canyon formations.

National Park Service's Tour of Colorado Plateau Geology. Includes Grand Canyon, Bryce Canyon, Zion National Park, and many others.

Geology of Zion National Park.

Geology of Bryce Canyon National Park.

Utah and Grand Canyon Stratigraphy Correlation.

Changing Views of the History of the Earth. Article on early estimates of Earth's absolute age.

USGS publication on radiometric dating.

A good overview of radiometric dating.

Radiometric Dating.

The Numeric Time Scale. USGS publication on absolute dating.
Radiometric Dating and the Geological Time Scale. Well-illustrated explanation of how various dating methods and stratigraphic principles are used to establish the geological time scale.

Biography of Adam Sedgwick.

Biography of John Joly.

Biography of Lord Kelvin (William Thomson).

W. H. Freeman & Co. and Sumanas, Inc.